/*
 * Copyright (C) 2007 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.android.dx.rop.code;

/**
 * Implementation of {@link TranslationAdvice} which conservatively answers
 * {@code false} to all methods.
 */
public final class ConservativeTranslationAdvice implements TranslationAdvice {

	/** {@code non-null;} standard instance of this class */
	public static final ConservativeTranslationAdvice THE_ONE = new ConservativeTranslationAdvice();

	/**
	 * This class is not publicly instantiable. Use {@link #THE_ONE}.
	 */
	private ConservativeTranslationAdvice() {
		// This space intentionally left blank.
	}

	/** {@inheritDoc} */
	public boolean hasConstantOperation(Rop opcode, RegisterSpec sourceA,
			RegisterSpec sourceB) {
		return false;
	}

	/** {@inheritDoc} */
	public boolean requiresSourcesInOrder(Rop opcode, RegisterSpecList sources) {
		return false;
	}

	/** {@inheritDoc} */
	public int getMaxOptimalRegisterCount() {
		return Integer.MAX_VALUE;
	}
}
